Storage plugins

Journals

Journal is a specialized type of actor which exposes an API to handle incoming events and store them in backend storage. By default Akka.Persistence uses a MemoryJournal which stores all events in memory and therefore it's not persistent storage. A custom journal configuration path may be specified inside akka.persistence.journal.plugin path and by default it requires two keys set: class and plugin-dispatcher. Example configuration:

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# Persistence plugins included with the extension #
###################################################

# In-memory journal plugin.
akka.persistence.journal.inmem {

Snapshot store

Snapshot store is a specialized type of actor which exposes an API to handle incoming snapshot-related requests and is able to save snapshots in some backend storage. By default Akka.Persistence uses a LocalSnapshotStore, which uses a local file system as storage. A custom snapshot store configuration path may be specified inside akka.persistence.snapshot-store.plugin path and by default it requires two keys set: class and plugin-dispatcher. Example configuration:

    class = "Akka.Persistence.Journal.MemoryJournal, Akka.Persistence"
    # Dispatcher for the plugin actor.
    plugin-dispatcher = "akka.actor.default-dispatcher"
}

# In-memory snapshot store plugin.
akka.persistence.snapshot-store.inmem {
    # Class name of the plugin.
    class = "Akka.Persistence.Snapshot.MemorySnapshotStore, Akka.Persistence"
    # Dispatcher for the plugin actor.
    plugin-dispatcher = "akka.actor.default-dispatcher"
}

# Local file system snapshot store plugin.
akka.persistence.snapshot-store.local {
    # Class name of the plugin.